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Removing and Replacing tyres on Rims (Tyre Mounting)

02 May 2012

Valentino Rossi

Bridgestone strongly recommends against mounting your own motorcycle tyres for your own safety.

Bridgestone strongly recommends against mounting your own motorcycle tyres for your own safety. Removing and replacing tyres on rims can be dangerous. Attempting to mount tyres with the wrong tools, experience or technique may result in a tyre explosion causing serious injury or death. Tyre mounting is best left to a qualified tyre dealer or professional fitter.

If despite this you decide to mount motorcycle tyres yourself then you must take the following advice into account:

Unless performing the mounting, always stand well clear of any tyre mounting operation. This is especially important when the tyre is being inflated. If the tyre has been improperly mounted, it may burst with explosive force causing serious injury or death.

Never mount passenger car tyres on motorcycle rims!

Serious injury or death can result from:

  • Failure to select the proper tyre and rim. The tyre must match the width and diameter requirements of the rim. For example, when mounting 16-inch diameter tyres, use only 16-inch diameter rims.

  • Failure to inspect both the tyre and rim. The rim must be free of cracks, dents, chips, and rust. The tyre must be free of bead damage, cuts, and punctures.

  • Exceeding the maximum bead seating pressure. The tyre must never be inflated beyond 0/4 Bar / 40PSI to seat the beads. Be absolutely certain beads are fully seated before adjusting inflation pressure to the level recommended for vehicle operation.Mount only “tubeless” tyres on “tubeless” rims when the rim manufacturer recommends this fitment. Some rims require tubes. A “tubeless” tyre must be installed on a “tube type” rim when the appropriate tube is inserted.

Do not install non-radial tubes in radial tyres. Insure that the tube marking matches the radial tyre marking before installation to rims that require tubes.
A new valve must be installed on the rim each time a worn out motorcycle tyre is replaced.
Never use flammable substances in tyre/rim assemblies. Never ignite flammable substances as a "short-cut" during mounting operations.

Rim size
It is extremely important that the proper size of rim is used for your tyres. Be sure to match your tyre size to the size allowed on the rim. Improper rim width may affect handling and stability. Be sure that there is proper clearance between the tyre and swingarm and any fender areas.

Wheel balancing
To avoid vibration and accelerated tyre wear, it is essential to balance the tyre & wheel assembly before use and each time the tyre is removed or replaced on the rim. Also, check the rim for any imperfections as they could affect the overall balance.

Tyre size selection
All motorcycles should be equipped with the tyre size specified by the motorcycle manufacturer as found in the owner’s manual or manufacturer’s website. Be sure to equip the bike with radial tyres only when they are required by the bike manufacturer.

Front and rear tyre matching
For optimum performance, it is very important to correctly match your front and rear tyres. Riding your motorcycle with an improper mix of radial construction tyres with bias or bias-belted construction tyres is dangerous. Your motorcycle’s handling characteristics can be seriously affected. You could have an accident resulting in serious personal injury or death. Consult your owner's manual or your local dealer, for the proper tyre replacement.

Mount tyres marked " Front Wheel" on front positions only and tyres marked "Rear Positions" on rear positions only.

Some motorcycles may be equipped with Radial tyres. Consult the motorcycle
manufacturer before equipping replacement Radial tyres to insure the proper specification and combination for your motorcycle.

A new front tyre equipped on a motorcycle with a worn rear tyre may cause instability.

When fitting a new tyre on a rim requiring a tube, a new tube should be fitted at the same time. Old tubes may become stretched and cause a crease which could make the tube fail. Check the size markings on the tube to ensure the tyre size appears on the tube. Do not fit tubes in radial motorcycle tyres, nor fit radial tyres on rims requiring tubes, unless it is specified by the tyre manufacturer.

Bridgestone strongly recommends against mounting your own motorcycle tyres for your own safety.